Spring mounting for vehicles



July 30, 1929. A. KAMPFER SPRING MOUNTING FOR VEHICLES Filed July 7, 1927 Jnvenfar:

Patented July. 30,1929.

UNITED STATES PATENT OFFICE.

.ADOLB amps-En, or BERLIN, ennmanx, nssxenon or on'n-rounrn 'ro max xunmn, or BnnLm-srnem'rz,- GERMANY, AND ONE-HALF r coun'r nnuann ozer'nnsnonrr, or rams rnancn.

. srnmemounrrne non vnnretns. r

ap ncation filed my 7,1 7. senarm. 304.103, and in; Germany October 1', 1926.

nection with the spring mountings. The invention is based onthe surprisingdiscovery that as a, result of the abrupt change of'leveragein the springs due to the position; of the su porting rollers oscillations of pronounced di erent magnitudes are produced which exer'cise such a dampening effect'on each other that they are not transmitted to the underframe and car body. This not only brmgs about a'carryfil'g of the vehicle free from all oscillations and vibrations, but greatly saves the spring material from loosing its resiliency. prematurely and reducesfriction between the various .s ring leaves.

Embo iments of my invention -on-. 1I 10tor-". run vehicles are shown in the drawing, by-

may of examples. 7

- igs. 1 and 2. illustrate one apphcatlon of my invention in side elevations with some parts in section and showing the spring in two'diflferent positions.

the spring being not shown.

. F15. 4 shows, 1n a side'elevation, a 'modi--' fied orm of application. 1 In the example shown in Figs. land 2 rollers 4, 5, 6 and-4, 5 and 6? for spring 3 are journalled in the supports 2 and 2, secured to the car frame 1, the said rollers serving as supports for the spring 3. In-the m1ddle,;1

Lsprmg 3 is connected in a well-known man ner b means of a clamping device 16 to a vehic e axle 7 .1 In the position shown inliig.

1 the vehicle is without load and rests-by.

means of the rollers 6 and 6 on the spring 3.

When loaded the spring is pressed down and '45 is supported first by rollers 5 and 5 and then,

.as shown in-Fig. 2, by rollers 6 and 6 The axle 7 is kept inconnectionwith the car frame 1 in a well-known manner by means of rods 8. In theexample. shown in Fig. 4 of a spring mounting for vehicles one end of the spring 10'projects into the case" support 14in which are mounted the rollers 11, 12, and 13 and which is secured to -theframe 1 The other end of the spring 10 extends into the Fig. 3 is asection along line 3'3 of 1lig. 1,-

'- case support 15 containing the rollers 11, 12',

and 13 and carried by the axle 7. The- .clamp blockl'ti which holdsthe spring leaves together is pivotallyconnectgd to'th'e frame '1 means of the pin17 ow far apart the rollers must be from each other in each particular case depends on 3 the bearing capacity and amount of oscillat1on displacement of the spring. To obtain the new effect according tomy invention it isonly' required that supporting rollers come at such intervals into successlve' engagement] 'withthe carrying spring whenever a variable load causes thesprmg to'alter its shape that there is an abrupt and sudden change ofleverage. Springs according to'my invention can 1-n-l1ke manner he used for railway and sur-" face cars.

While I have illustrated an... 4, 4, 5, 5

'6 and 6 and while I preferably use rollers at "these-points so that'as the spring flexes andthe ends of the spring move longitudinally,

friction will be reduced, et I do not wish to be limlted to this as these rollers constitute at each end of the sprin several separate abutments disposed in di erent horizontal planes and 's aced from each other a, distance such abru the spring is flexed. I While I- have illustrated a construction wherein'thespring is carried by the'axle and bears against abutments mounted upon the; chassis, it-will be obviousthat an inversion of this will be withinthe spirit of my invention and that it will be,also within the spirit of ptly. engagethe difierent abutments as;

that t e ends" of the springlsuccessively, and

my invention to'provide a spring which was normally bowed upward at its ends instead I ofdownward at its ends its-illustrated.

to secure States is 3-- 1. The combination bf a vehicle chassis, an axle, a connection between said-chassis and said axle and allowing said axle to oscillate spaced from each other a distance such as to leaf spring, at each end of said leaf spring said supporting rollers being arranged .in markedly difierent horizontal planes and What I claim as my invention and desire by Letterslatent of the United.-

' secure an abrupt change of leverage when a the spring is flexed successively against said abutmen p 2. The combinatlon of a vehicle chassis, an axle, a rod connection between sald chassis and said axle and allowing said axle to oscillate crosswise to said chassis, superposed spring .leaves forming a leaf spring secured'to said axle, and at least two rollers between each end of said leaf spring-and said chassis and adapted to enable said chassis to be carried'by said leaf spring,-at each end of said leaf spring,

' o a. supporting member, superposed leaves said-supporting rollers being arranged in difierent horizontalplanes and at such a disforming a compound'leaf spring secured'to said supporting member, and a plurality of abutments carried by the chassis opposite each end of the spring and with which abut.-

ments the ends of the spring successively en-' gage, the abutments being disposed in markedly difi'erent planes and spaced from each ,other a distance such "as to secure abrupt changes of leverage when the spring is fiexed and successively engages the different abutments. I l. The combination with a vehicle, of a supporting and a supported element, a compound leaf spring carried by one of said elements'and supporting at its ends theother element, of a series of abutments associated with each end of the spring and carriedby the last named element and against which the ends of the spring successively bear, the abutments of each series being disposed in diife'rent horizontal planes and iILsuch spaced relation as to secure abrupt changes of leverage when the spring is flexed and successively engages said abutments. V z ADOLF KAMPFER. 

